NDA-24233 Issue 2 Page 5-1

VisuaLink 128/384 Engineering Guide Factors of Disconnections

5: List of Factors for Disconnection in Table

Location of Factors for Disconnection

LU: Local User LN: Local Network TN: Transit Network RU: Remote User RN: Remote Network

Number Message Factors for Disconnection Countermeasure (Example) Location
# 1 Unassigned
number Call cannot come in since it is
currently a unassigned number. Check the remote number. LN/RU
# 2 No route to
specified transit
network
Specified transit network canno t be
recognized. Check the remote number. TN/LN
# 3 No route to
destination No route to remote site. Check the remote number. LN/RU
# 6 Cancel
unacceptable A channel cannot be accepted in a
network. After a while, retry connection. LN
# 7 Remote is busy Connected channel is used. After a while, retry connection. LN
# 16 Normal is busy A restoration of a disconnection of a
call is requested. Try again RU
# 17 User busy It is currently in a communication
with others. After a while, make a
connection again. RU/RN
# 18 No user response No response Check status of remote unit. RN
# 19 User alerti ng, no
answer No response after a call message is
received. Check status of remote unit. RN
# 21 Call rejec te d Communication is rejected. Check status of remote unit. RU
# 22 Number changed Remote terminal number has been
changed. Check remote number, make
another connection. LN/RU
# 26 Non-selec te d user
clearing No incoming bell After a while, retry. LN
# 27 Destination out of
order Remote terminal is OFF Check status of remote unit. RU
# 28 Invalid number
format (address
incomplete)
Invalid format or incomplete
number. Check remote number and
retry. LN/RU/
RN
# 29 Facility rejected Requested facility is not allowed. Check remote number. LN/RU/
RN
# 30 Response to
STATus ENquiry Inquiry for status was received. Check remote number and
retry. LU/LN
# 31 Normal,
unspecified Normal status was reported. After a while, retry. RN
# 34 Circuit/c h annel
congestion No line or channel is available. Check communication status. LN/RN/TN
# 38 Line failure Network is not functioning normally. After a while, retry. LU/LN/RU
# 41 Temporary failure Network is temporarily not available. After a while, retry. RN
# 42 Switching
equipment
congestion
Switch is busy. After a while, retry.
# 43 Access information
discarded Requested information element
cannot be transmitted to a remote. After a while, retry.
# 44 Requested channel
not available Reported line or channel cannot be
provided. After a while, retry. LN/RU
# 47 Resource
unavailable,
unspecified
Report status that other network is
busy. Contact a retailer or a service
center.
# 49 This service is
currently not
available
QOS cannot be provided. RU/RN/
LN